▪ having no outstanding, individual, or unusual features; unremarkable or impersonal: "the anonymous black car waiting to take him to the airport"Similarcharacterlessunremarkablenondescriptimpersonalfacelesscolorlessgray
▪ used in names of support groups for addicts of a substance or behavior to indicate the confidentiality maintained among members of the group:"Alcoholics Anonymous"
Word Originlate 16th century: via late Latin from Greek anōnumos ‘nameless’ (from an- ‘without’ + onoma ‘name’) + -ous.
